Magnus Johansson

barrier-forming ability due to parallel particle alignment in matrices

high thermal stability (up to 1000°C)

elastic but tough particles

very low silica content for Phlogopite grades

excellent brightness and whiteness for Muscovite grades

high dielectric strength and electrical insulation properties.

LKAB Minerals exclusively source MicaFort from global strategic partners and our own high-quality mine in Finland. By using our extensive mineral processing knowledge we produce a broad portfolio of Phlogopite and Muscovite Mica products to be used in a variety of applications.

The main markets for LKAB Minerals' MicaFort are polymers, coatings, and construction. Please visit our industry uses section to find out more about how to use our products for your application.

MicaFort applications

MicaFort in polymers

MicaFort finds increasing use in thermoplastic compounds. It is used to replace glass-fibers in polyamide and to replace other mineral fillers in polypropylene.

MicaFort standard grades

Dry ground: PD900, PD200, MD500, MD250, MD150, MD100

Micronised: MM75, SCM-3W, SX300, SX400

Silane coated: PW80S, PW30S

Wet ground: PW80, PW30, R302, R120, R90, P66

MicaFort packaging

Our MicaFort product range is available in paper sacks or big bags. Some of our MicaFort grades are available in bulk, please contact your sales representative to find out if this applies to the grade you like to purchase.

Physical properties of MicaFort

Chemical properties of MicaFort

Phlogopite Mica is a hydrated silicate of potassium and magnesium whereas Muscovite Mica a hydrated silicate of potassium and aluminium is.

MicaFort origin

Muscovite is a constituent of acid igneous rocks like granite, pegmatite or alaskite, some regionally metamorphosed rocks and clastic sedimentary rocks, ad is a product of alteration. Most commercial deposits are derived from pegmatites which contain 1-2% and rarely up to 10% muscovite. Mica is found in many regions of the world in the form of pegmatite rock and mica schist.

Phlogopite is associated with metamorphosed limestone and ultrabasic rocks, particularly hydrothermal veins formed through metasomatism of magnesium-rich rocks as well as ultrabasic and carbonatite ring intrusions associated with ancient shield areas. LKAB Minerals' Phlogopite Mica is sourced from a major deposit in Finland.

MicaFort toxicology

Phlogopite and Muscovite Mica are non-toxic natural minerals. For further information please download the Safety Data Sheets in the box on the right.